a valuable addition to the fauna of those times which preceded the 

 advent of the great ice age, when ah these types disappeared and made 

 room for the mastodon, the mammoth and other creatures, including 

 the megalonyx and its allies. 



Other Extinct Forms. 



Besides the above, may be seen a large incisor belonging to a 

 large carnivore allied to the modern dog or wolf, the tooth of an 

 oreodont, an extinct hare : Falceolagus ttcrc/idus, Cope, belonging to 

 the family of the Lep ;ridae, also a species of Trionyx, which Prof. 

 Cope has called I', leticopotamicux from the fact that similar forms 

 occur also m the so-called White River series or formation in the 

 Territories of the United States to the south. But besides the above, 

 we find also extir.ct forms allied to the squirrels : Hypertragulus rever- 

 aus, Cope, and also a large number of bones of siluroid fishes belong- 

 ing to the genera Aniiurus, Rhineastes, etc. 



Amongst these we find Amiurus McConndli, A. cancellatus, all 

 described by Cope ; also Amia macrospondyla, and Amia Selwyniana, 

 and Khineastes rJiceas, Cope. 



Then come the remains of a species of Styleinis, an extinct turlle 

 belonging to the family of the Testudinata, one of the Chelonians. 



Last but not least 



come the representatives of the two genera Chcdicotheriuiu and 

 Hemipscdodon. The latter form, described under the name of //. 

 yrandis. Cope, affords another example of an extinct type of hyasna 

 much larger than any of the modern living forms. It belongs to the 

 family of the Ilycenodontidai and forms part of a sub-order of that 

 family with very large rejjresentatives. The genus C/udicoflterimx,, one 

 of the family of Chalicotheridag, has certain afifinities to the rhinoceros, 

 which in size and proportions it greatly resembled. 



Thus it will be seen that from the Miocene Tertiary strata of the 

 Swiit Current River not far from the line of the Canadian Pacific Rail 

 way, as well as from the treeless prairie region, there was once a large 

 fauna, the rcmams of which are entombed in these beds, and some of 

 which now adorn the cases of the National Museum of the Capital. 



